﻿using System.Threading;
using DM4;
using sscore;
using System;
using System.Collections.Generic;
using sscore.Utils;
using System.Text.RegularExpressions;
using System.IO;
using sscore.Requests;

namespace CO
{
    public class CO : ModuleBase
    {
        private readonly string _searchUrl;
        private readonly string _offenderLink;
        private readonly string _imageLink;
        private const string StateName = "CO";
        private ResultFile _imagesResultFile;

        private const string ExcBann = "You have been temporarily banned from this site due to suspicious activity. You may attempt to log back in, in 30 minutes.";
        private const string ExcDisclaimer = "Request was redirected to disclaimer page. Need restart thread";
        private const string StrDisclaimer = "I have read this disclaimer and agree to all provisions";

        public CO()
        {
            //initialize main system constants
            ModuleCode = "SO_CO";
            Description = "CO Sex Offenders";
            Version = "1.0";

            //for creating sessions
            StartParam = 1;
            StopParam = 1000;

            //initialize help 
            AddToHelp(DM4Consts.StartPosition, String.Format("{0}...{1}", StartParam, StopParam));
            AddToHelp(DM4Consts.EndPositon, String.Format("{0}...{1}", StartParam, StopParam));

            AddToHelp(DM4Consts.IsDownload, "true|false");
            AddToHelp(DM4Consts.IsDownloadImg, "true|false");
            AddToHelp(DM4Consts.InsertToDb, "false|true", "(Expected: servername, dbname)");
            AddToHelp(DM4Consts.ServerName, "");
            AddToHelp(DM4Consts.DbName, "");
            AddToHelp(DM4Consts.IsClearDb, "false|true");
            AddToHelp(DM4Consts.TestParam, "false|true");

            RootUrl = "http://sor.state.co.us/"; //root url
            _searchUrl = string.Format("{0}index.cfm?SOR=offender.list", RootUrl);
            _offenderLink = string.Format("{0}index.cfm?SOR=offender.detail&id={{0}}", RootUrl);
            _imageLink = string.Format("{0}index.cfm?SOR=offender.jpg&id={{0}}", RootUrl);
        }

        private void SetParametersDefaults()
        {
            Params.CreateBooleanParam(DM4Consts.IsDownload, true);
            Params.CreateBooleanParam(DM4Consts.IsDownloadImg, true);
            Params.CreateBooleanParam(DM4Consts.InsertToDb, false);
            Params.CreateBooleanParam(DM4Consts.IsClearDb, false);
            Params.CreateStringParam(DM4Consts.DbName, "");
            Params.CreateStringParam(DM4Consts.ServerName, "");
            Params.CreateIntegerParam(DM4Consts.StartPosition, StartParam);
            Params.CreateIntegerParam(DM4Consts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
            Params.CreateIntegerParam(DM4Consts.EndPositon, StopParam);
            Params.CreateIntegerParam(DM4Consts.LastRecord, 0);
        }

        public override OperationResult Init(IDM4Core iCore, DmTaskParams param)
        {
            //use basic initialization sequence
            base.Init(iCore, param);

            SetParametersDefaults();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult Start()
        {
            DoWork();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult DoWork()
        {
            OperationResult or = new OperationResult { Result = DM4Consts.ErrorUnknown };

            if (!Ct.IsCancellationRequested)
            {
                WriteLog("Start parameters:", MessageType.Warning);
                foreach (KeyValuePair<string, string> kvp in Params.GetDictionary()) //get all existing parameters
                    WriteLog(String.Format("Key = {0}, Value = {1}", kvp.Key, kvp.Value), MessageType.Warning);

                if (Params.GetBooleanParam(DM4Consts.IsDownload))
                    Load();

                if (Params.GetBooleanParam(DM4Consts.InsertToDb))
                    if ((Params.GetStringParam(DM4Consts.DbName) == "") || (Params.GetStringParam(DM4Consts.ServerName) == ""))
                    {
                        or.Message = String.Format("{0} or {1} is empty", DM4Consts.DbName, DM4Consts.ServerName);
                        ResultCode = DM4Consts.SessionResultCodeError;
                        ResultMessage = or.Message;
                        UpdateStatus(DmConsts.Error);
                        WriteErrorLog(or.Message); //writting to error and session log   

                        return or;
                    }
                    else
                    {
                        //insert offenders to db 
                        UpdateStatus(DM4Consts.SessionInsertToDb);

                        Offenders.OffInsertToDatabase(StateName, Params.GetStringParam(DmConsts.DbName),
                             Params.GetStringParam(DmConsts.ServerName), ResultDir, Params.GetBooleanParam(DmConsts.IsClearDb),
                             WriteLog);

                    }

                //check if need abort task
                if (Ct.IsCancellationRequested)
                {
                    ResultCode = DM4Consts.SessionResultTerminateByUser;
                    ResultMessage = "Session terminated by user";
                    UpdateStatus(DM4Consts.SessionWait);
                    WriteLog("Session aborted by user", MessageType.Cool);
                }
                else
                {
                    UpdateProgress(1);
                    ResultCode = DM4Consts.SessionResultCodeOk;
                    ResultMessage = String.Format("Session complete, errors : {0}, records : {1}", TaskParams.ErrorCount, TaskParams.RecordCount);
                    UpdateStatus(DM4Consts.SessionComplete);
                    WriteLog("------------Finish----------------", MessageType.Cool);
                }
            }
            else
            {
                ResultCode = DM4Consts.SessionResultTerminateByUser;
                ResultMessage = "Session terminated by user";
                UpdateStatus(DM4Consts.SessionWait);
                WriteLog("Session aborted by user", MessageType.Cool);
            }


            return or;
        }

        private void Load()
        {
            string resultFileName = String.Format("{0}\\{1}.{2}", ResultDir, TaskParams.SessionId, DmConsts.ResultFilesExtension);
            bool workFlag = true;

            ResultFile = new ResultFile(resultFileName, OffendersResult.GetHeader());
            _imagesResultFile = new ResultFile(String.Format("{0}\\{1}_images.{2}", ResultDir, TaskParams.SessionId, DM4Consts.ResultFilesExtension), "FileName|FileUrl");
            try
            {
                while (workFlag)
                {
                    //рабочий цикл
                    string error;

                    try
                    {
                        error = "";  //Required!!  /*if (!String.IsNullOrEmpty(error)) --> restart thread; else --> download finished*/

                        WriteLog("Start download...");
                        Searching();
                    }
                    catch (Exception e)
                    {
                        error = e.Message;
                    }

                    if (!String.IsNullOrEmpty(error))
                    {
                        Thread.Sleep(30000);
                        WriteErrorLog(error);
                        WriteLog("Try continue work...", MessageType.Warning);
                    }
                    else
                    {
                        workFlag = false;  //все нормально откачало, заканчиваем работу
                    }
                }
            }
            finally
            {
                ResultFile.Close();
                _imagesResultFile.Close();
            }
        }

        private void Searching()
        {
            if (Test)
            {
                Params.SetIntegerParam(DmConsts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
                Params.SetIntegerParam(DmConsts.EndPositon, Params.GetIntegerParam(DmConsts.StartPosition));
            }

            string html = GetCookies();
            int curMaxSearchParam = Convert.ToInt32(RegExpr.Parse(html, @"(?si:<strong>([\d]+)</strong>\s*records that meet your search criteria)")) / 20 + 1;
            if (Params.GetIntegerParam(DmConsts.EndPositon) > curMaxSearchParam)
                Params.SetIntegerParam(DmConsts.EndPositon, curMaxSearchParam);

            if (Params.GetIntegerParam(DmConsts.LastPosition) == 1)
            {
                ParseResultPage(html, _searchUrl);
                Params.SetIntegerParam(DmConsts.LastPosition, Params.GetIntegerParam(DmConsts.LastPosition) + 1);
            }

            for (int indSearchParam = Params.GetIntegerParam(DmConsts.LastPosition); indSearchParam <= Params.GetIntegerParam(DmConsts.EndPositon); indSearchParam++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastPosition, indSearchParam);
                UpdateProgress();

                WriteLog(String.Format("start processing offenders page [{0}]", Params.GetIntegerParam(DmConsts.LastPosition)));

                string url = String.Format("{0}&eml=&zip=&county=&category=ALL&unincorperated=&city=&street=&fname=&lname=&sort=NAM&page={1}",
                    _searchUrl, Params.GetIntegerParam(DmConsts.LastPosition));
                string prevUrl;
                if (Params.GetIntegerParam(DmConsts.LastPosition) == 2)
                    prevUrl = _searchUrl;
                else
                    prevUrl = String.Format("{0}&eml=&zip=&county=&category=ALL&unincorperated=&city=&street=&fname=&lname=&sort=NAM&page={1}",
                        _searchUrl, (Params.GetIntegerParam(DmConsts.LastPosition) - 1));

                html = GetRedirectRequest.RefererWithCookies(url, prevUrl, Rpm);
                if (html.Contains(StrDisclaimer)) throw new Exception(ExcDisclaimer);
                if (html.Contains("You have been temporarily banned from this site due to suspicious activity"))
                    throw new Exception(ExcBann);

                ParseResultPage(html, url);
                string next = RegExpr.Parse(html, @"(?si:>\s*Next\s*</a>)", 0);
                if (string.IsNullOrEmpty(next)) break;
            }
        }

        private string GetCookies()
        {
            WriteLog("get cookies");

            string html = GetRedirectRequest.ReturnCookies(_searchUrl, Rpm);
            if (html.Contains("You have been temporarily banned from this site due to suspicious activity"))
                throw new Exception(ExcBann);

            const string expr = @"(?si:CFID=([\S]+);.*?CFTOKEN=([\S]+);.*?)";
            Rpm.Cookies = String.Format("CFID={0}; CFTOKEN={1}", RegExpr.Parse(Rpm.Cookies, expr), RegExpr.Parse(Rpm.Cookies, expr, 2));

            html = GetRedirectRequest.WithCookies(_searchUrl, Rpm);
            if (html.Contains(StrDisclaimer)) throw new Exception(ExcDisclaimer);
            if (html.Contains("You have been temporarily banned from this site due to suspicious activity"))
                throw new Exception(ExcBann);

            return html;
        }

        private void ParseResultPage(string html, string referer)
        {
            html = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(html.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));

            if (!RegExpr.IsMatch(html, @"(?si:Sex Offender Registry)"))
                throw new Exception(String.Format("Result page: {0}{1}{2}", DmConsts.ExcNeedRestart, Environment.NewLine, html));

            MatchCollection mc = RegExpr.ParseMatchCollection(html, @"(?si:\x26id=([\S]+)"">)");
            WriteLog(String.Format("found [{0}] matches", mc.Count));
            if (mc.Count == 0)
                throw new Exception(DmConsts.ExcNeedRestart + Environment.NewLine + html);

            List<string> list = new List<string>();

            foreach (Match matchLoc in mc)
                if (!list.Contains(matchLoc.Groups[1].Value))
                    list.Add(matchLoc.Groups[1].Value);

            WriteLog(String.Format("found [{0}] id[s]", list.Count));

            for (int i = Params.GetIntegerParam(DmConsts.LastRecord); i < list.Count; i++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastRecord, i);
                string lookupKey = list[i];
                string offenderHtml = GetRedirectRequest.RefererWithCookies(string.Format(_offenderLink, lookupKey), referer, Rpm);
                WriteLog(String.Format("ParseOffender [{0}][{1}]", Params.GetIntegerParam(DmConsts.LastRecord), lookupKey));

                if (offenderHtml.Contains(StrDisclaimer))
                    throw new Exception(ExcDisclaimer);
                if (offenderHtml.Contains("You have been temporarily banned from this site due to suspicious activity"))
                    throw new Exception(ExcBann);
                if (!RegExpr.IsMatch(offenderHtml, @"(?si:State of Colorado Sex Offender Registration form)"))
                    throw new Exception("Offenders page:" + DmConsts.ExcNeedRestart);

                ParseOffender(offenderHtml, lookupKey);
                UpdateRecordCount(1);
                Thread.Sleep(5000); //only for CO site

            }
            Params.SetIntegerParam(DmConsts.LastRecord, 0);
        }

        private void ParseOffender(string offenderHtml, string lookupKey)
        {
            offenderHtml = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(offenderHtml.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));
            using (OffendersResult or = new OffendersResult())
            {
                or.Source_State = StateName;
                or.offenderLink = string.Format(_offenderLink, lookupKey);
                or.Source_id = lookupKey;

                or.fullname = RegExpr.Parse(offenderHtml, @"(?si:<label[^<>]*?>\s*Name:\s*</label>\s*</div>\s*<span[^<>]*?>([^<>]*?)</span>)").Trim();

                MatchCollection mcAliases = RegExpr.ParseMatchCollection(
                   RegExpr.Parse(offenderHtml, @"(?si:<label[^<>]*?>Aliases/Nicknames:\s*</label>\s*</div>\s*<span[^<>]*?>\s*<ul>(.*?)</ul>)")
                   , @"(?si:<li>(.*?)</li>)");
                foreach (Match m in mcAliases)
                    or.AKA += m.Groups[1].Value.Trim();

                or.Address = RegExpr.Parse(offenderHtml, @"(?si:<label[^<>]*?>Last Reported Address:[^<>]*?</label>\s*</div>\s*<span[^<>]*?>(.*?)</span>)").Trim();
                or.sex = RegExpr.Parse(offenderHtml, @"(?si:<label[^<>]*?>Gender:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>\s*<ul>\s*<li>(.*?)</li>)").Trim();
                or.Birthdate = RegExpr.Parse(offenderHtml, @"(?si:>Date of Birth:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?><ul><li>(.*?)</li>)").Trim();
                or.Ethnicity = RegExpr.Parse(offenderHtml, @"(?si:>Race:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>[^<>]*?<ul>[^<>]*?<li>(.*?)</li>)").Trim();
                or.eye_color = RegExpr.Parse(offenderHtml, @"(?si:>Eyes:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>([^<>]*?)<)").Trim();
                or.hair_color = RegExpr.Parse(offenderHtml, @"(?si:>Hair:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>([^<>]*?)<)").Trim();
                or.height = RegExpr.Parse(offenderHtml, @"(?si:>Height:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>([^<>]*?)<)").Trim();
                or.weight = RegExpr.Parse(offenderHtml, @"(?si:>Weight:[^<>]*?</label>[^<>]*?</div>[^<>]*?<span[^<>]*?>([^<>]*?)<)").Trim();

                MatchCollection mcMarks = RegExpr.ParseMatchCollection(
                  RegExpr.Parse(offenderHtml, @"(?si:>Scars/Marks/Tattoos:\s*</label>\s*</div>\s*<span[^<>]*?>\s*<ul>(.*?)</ul>)")
                  , @"(?si:<li>(.*?)</li>)");
                foreach (Match m in mcMarks)
                    or.marks += m.Groups[1].Value.Trim();


                //FIELD CRIME MAY BE EMPTY!
                MatchCollection mcCrime = RegExpr.ParseMatchCollection(
                     RegExpr.Parse(offenderHtml, @"(?si:>\s*Convictions:\s*</label>.*?<ul>(.*?)</ul>.*?>Race:\s*<)")
                  , @"(?si:<li>(.*?)</li>)");

                foreach (Match m in mcCrime)
                    or.Crime += "@" + m.Groups[1].Value.Trim();

                or.Crime = HtmlUtils.KillSpace(or.Crime);

                string imageHtmlId = RegExpr.Parse(offenderHtml, @"(?si:offender.jpg\x26id=([^""]+)"")");
                if (Params.GetBooleanParam(DmConsts.IsDownloadImg) && imageHtmlId != "")
                {
                    string cookies = Rpm.Cookies;
                    or.Image_ID = Guid.NewGuid() + ".jpg";
                    or.ImageLink = string.Format(_imageLink, imageHtmlId);

                    Offenders.DownloadImage(_imagesResultFile, String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID),
                        or.ImageLink, TaskParams.SessionId, ref cookies, or.offenderLink, "", "80", false, false);
                }

                if (or.Image_ID != "" && !File.Exists(String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID)))
                    throw new Exception(DmConsts.ExcImgNotFound);


                offenderHtml = HtmlUtils.KillSpace(RegExpUtils.DeleteTag(offenderHtml));
                or.Status = RegExpr.Parse(offenderHtml, @"(?si:>\s*National Sex Offender Public Registry\s*<.*?<strong>(.*?)</strong>\s*<fieldset>\s*<legend>\s*Sex Offender Details\s*</)").Trim();
                or.Status = HtmlUtils.KillSpace(or.Status.Replace("</strong>", "@").Replace("<strong>", "").Replace("ofFailing", "of Failing").Replace("Currently Registered With", "Currently Registered@With"));

                ResultFile.Write(or.GetValues());
            }
        }

        private void UpdateProgress()
        {
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.LastPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.LastPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.LastPosition))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.LastPosition),
                    DmConsts.StartPosition, DmConsts.LastPosition));
            UpdateProgress(((double)(Params.GetIntegerParam(DmConsts.LastPosition) - Params.GetIntegerParam(DmConsts.StartPosition))) / (Params.GetIntegerParam(DmConsts.EndPositon) - Params.GetIntegerParam(DmConsts.StartPosition) + 1));
        }
    }
}
